Fastener-setting device



O.J. GROEHN 1,743,209

FASTENER SETTING DEVI GE Filed April 5. 1926 2 Sheets-Sheet 1 Jan; 14,1930. J GROEHN V 1,743,209

FASTENER SETTI DEVICE Filed April 5. 1926 2 Shets-Sheet 2 Patented Jan.14, 1930 UNITED ST TE o'rro- .1. e'nonnn, or GBOSSE POINTE PARK,

PATENT OFFICE."

, MICHIGAN, ASSIGNOR TO HUDSON MOTOR CAR COMPANY, OF DETROIT, MICHIGAN,A CORPORATION OF MICHIGAN Application filed April 5,.

This invention has-for its object to provide a portable device forsetting fasteners in relatively inaccessible places, and moreparticularly to provide a power operated device for setting tubular orother rivets to connect the inturned flanges of the panels of metalautomobile bodies, the device being especially, although notexclusively, adapted to the setting of rivets in the formation of paneljoints of the type disclosed and claimed in my prior application SerialNo. 50,406, filed August 15,

1925, patented December4, 1928, No.-1,693,-

750. In the formation ofsuch and similar panel oints it is desirablethat the rivets connecting the panel flanges be set asclosely aspossible to the inner faces of the flanges, while the nature of the workis such as substantially to require the use of power operated settingdevices. Moreover, in the assembling of a body, it is necessary to set aconsiderable number of rivets whose positions are widely distributedover the interior of the body, so that considerations of economy,efliciency, expedition, and convenience call for the use of a portabledevice for this purpose. The present invention has, therefore, for itsprimary object to provide a relatively light, portable riveting devicecapable of operation in the position referred to and of exerting a forceof the amount required for this class of work.

The foregoing and other objects of the invention, together with meanswhereby the latter may be carried into effect, will best be understoodfrom the following description of certain forms or embodiments thereofshown in the accompanying drawings. It will be understood, however, thatthe particular constructions described and shown have been chosen forillustrative purposes merely, and that the invention, as defined by theclaims hereunto appended, may be otherwise embodied without departurefrom its spirit and scope.

In said drawings:

Fig. 1 is a substantially central, longitudinal section of a rivetingdevice embodying the invention.

Fig. 2 is a plan view thereof.

Fig. 3 is a detail section of a panel joint, showing in dotted lines thecooperating jaws 1926. Serial No. 99,795.

of the riveting device in position to set a rivet in said joint.

Fig. 4is a view similar to Fig. 1, show-' ing another form of theinvention.

Fig. 5 is a detail section on the line 5'5,

Fi 4. In Fig. 3 are shown two contiguous panels 15 of an automobilebody, said panels having at their adjacent edges inturned flanges 16WhlCh, together with the interposed flange 17 of 'a combined stiffeningand finishing molding 18, are secured together by rivets 19, hereinshown as of the tubular type. In order to prevent o ening of the paneljoint at the outer side of the body under tensile strains, it isdesirable that the rivets 19 be set as closely as possible to the innerfaces of the panels 15. To this end, the rivet setting device embodyingthe present invention comprises cooperating relatively movable upper andlower setting jaws 20 and 21 carrying, as closely'as possible to theirfree ends, co;

operating setting dies 22 and 23. The operat 111g mechanism for the jawsis laterally offset of the link 25 being pivoted at 28 to the free endof the jaw 20, and the duter end of the link 26 being pivoted at 29 tocars 30 formed on the jaw 21. Beyond the pivot 29 the lower jaw 21carries a fluid pressure cylinder 31 which in the construction shown isformed integral therewith. Operating in the cylinder 31 is a piston 32having a piston rod 33 which extends through an opening 34 in the end ofthe cylinder and is connected with the pivot 27 of the toggle. Ifdesired, the piston rod 33, its-connection with the toggle, and thetoggle itself may be housed and protected by flanges 35 formed on thelower jaw 21 and extendingfrom the end of the cylinder 31 to lconnection 38. At its opposite or mner end the passage 37communicates-with the outer end of the cylinder 31 throu h a nipple 39by which the supporting han le 36 is secured to the head 40 of saidcylinder. Fluid pres sure admitted to the outer end of the cylinder 31from the connections described causes the piston 32 to move inwardly, ortoward the right in Fig. 1, to close the aws upon the work, said pistonbeing moved in the opposite direction to open the jaws by means of aspring 41 inter osed between said piston and the inner end 0 thecylinder and surrounding the piston rod 33. The passage 37 isintercepted by a wall 42 having a port 43 controlled by a valve 44 whichis normally held seated to close said port by a spring 45 interposedbetween said valve and a plug 46 which closes an opening in the handlethrough which said valve is inserted. At the side of the wall 42 towardthe cylinder 31 the handle is formed with a port 47 communicating withthe atmosphere and disposed in axial alinement with the port 43. Thevalve 44 is formed with a stem 48 of smaller diameter than the port 47and extending therethrough, said stem having at its outer end a head 49constitutinga valve for closing the port 47. The arrangement is suchthat when the valve 44 is seated, the valve 49 is in position to openthe port 47, thereby exhausting the outer end of the cylinder 31 to theatmosphere, and when the stem 48 is depressed to open the 'valve 44 andadmit fluid pressure to the cylinder the valve 49 closes the port 47 Thecombined inlet and exhaust valve 44, 48, 49 is manuall operated as abovedescribed to admit flui pressure to the c linder 31 and exhaust the sametherefrom y means of a finger lever 50 pivoted at 51 between ears orflan es 52 formed on the upper side of the ban e 36, said lever engagingthe end of the, valve between its free end and the pivot 5t, and beingextended slightly beyond said pivot, as shown at 53, to engage a stop 54which as shown comprises a pin carried by the flanges 52 and extendingbetween the same.

In Fig. 1 the parts are shown in the positions occupied by them at thecompletion of the setting operation and at the beginning of theretraction of the piston and the opening of the jaws. Normally, and withthe combined pressure and exhaust valve 44,49 in the position shown, thespring 41 holds thepiston 32 in its outermost position and the jawsopen. With the parts in the latter position, the device is applied toa-rivet to be set with the dies 22 and 23 engaging said rivet atopposite sides, and the lever 50 depressed, thereby unseating the valve44 and causing the valve 49 to close the exhaust port 47 Fluid pressureis thereupon admitted to the outer end of the cylinder 31, moving thepiston into the position shown and closing the jaws upon the rivet toset the latter. Thereafter, the lever 50 is releasedto permit the spring45 to seat the valve 44 and cause the valve 49 to open the exhaust port47 as shown, whereupon the spring 41'w1ll retract the piston 32 and openthe jaws.

In the construction shown in Figs. 1 and 2, the cylinder'31 is disposedwith its axis in alinement with the handle 36, and transverse to thepath of relative movement of the setting jaws and dies, therebyproviding an elongated device which may be conveniently projected intocontracted spaces, remote corners, or other relatively inaccessibleplaces.

For some purposes a more compact device may be desirable, and such adevice is provided by the construction shown in Figs. 4 and 5 in whichthe cylinder 310 is disposed with its axis transverse to the supportinghandle 36 or parallel to the path of movement of the jaws and dies. Inthis construction the jaws 200 and 210 are shown as crossing one anotherat the pivot 24, the cylinder 310 being supported upon and secured bybolts 55 to the extended outer end of the upper jaw 200. The piston 320in the cylinder 310 is connected by a link 330 with the extended outerend of the lower jaw 210 which projects laterally into the lower end ofthe cylinder 310. To accommodate this lateral arrangement a plurality ofsprings 410 are employed in place of the single spring 41 in the form ofthe invention firstdescribed, said springs being interposed between thepiston 320 and the lower cylinder head which is formed by the extendedend of the jaw 200. The cylinder 310 has formed in its wall a fluidpassage 56 communicating at ope end with the outer end of the interiorof the cylinder chamber and at the other with the nipple 39. Also inthis construction the operative connections are housed by a lateralextension 57 on the cylinder. The construction shown in Figs; 4 and 5 isotherwise substantially identical with that shown in Figs. 1 and 2 andthe operation thereof will be readily understood without furtherexplanation in detail. This construction is claimed generically hereinand specifically in a divisional application filed January .15, 1929,Serial No. 332,664.

Having thus described my invention, I claim 1. A portable fastenersetting device comprisin a pair of pivoted jaws having at one side 0 thepivot free ends provided with cooperating setting dies, a fluid pressurecylin-l der carried by one of said jaws at the opposite side of thepivot, a piston in said cylinder operatively connected with the otherjaw, a supporting handle bey'ond said cylinder, said handle having apressure fluid passage communicating with one end of said cylinder and aport opening to the atmosphere, a spring interposed between said pistonand the opposite end of said cylinder, and a manually operated valvecarried by said handle for controlling saidpassage and port.

2. A portable fastener setting device comprising a pair of pivoted jawshaving at one side of the pivot free ends provided with cooperatingsetting dies, a-fluid pressure cylinder carried by one of sa1d jaws atthe opposite side of the pivot, a toggle connecting said jaws betweensaid cylinder and the pivot, a piston in said cylinder operativelyconnected with said toggle, a supporting handle beyond said cylinder,said handlehaving a pressure fluid passage communicating with one end ofsaid cylinder and a port opening to the atmosphere, a spring interposedbetween said piston and the opposite end of said cylinder, and amanually operated valve carried by said handle for controlling saidpassage and port.

In testimony whereof I aflix my signature.

OTTO J. GROEHN.

